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911uk

After market exhaust and engine management light

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7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
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YOUR RESEARCHAfter market exhaust and engine management light

Leading reported evidence

Install top gear 200 cell cat exhaust

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Performed · outcome unconfirmed · Original poster

I have fitted a Top gear 200 cell cat exhaust to my 996tt and the lambda sensors are showing up as a fault code and engine management light is on.

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After market exhaust and engine management light
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Leading evidence: 'Install top gear 200 cell cat exhaust' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install top gear 200 cell cat exhaust' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Install top gear 200 cell cat exhaust

No successful repair reported for this finding.

0
Reported fixes
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Unsuccessful attempts
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Read evidence and context
Discussions that performed work without a confirmed outcome
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

I have fitted a Top gear 200 cell cat exhaust to my 996tt and the lambda sensors are showing up as a fault code and engine management light is on.

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After market exhaust and engine management light
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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 911uk: 1 discussions

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Generation: 20261026T105141Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi. I have fitted a Top gear 200 cell cat exhaust to my 996tt and the lambda sensors are showing up as a fault code and engine management light is on. I have heard this is a very common problem. I understand that if I get it re mapped it will take the light off and also read about some sort of device that you fit into the lambda sensor line that will fix it. Anybody had this issue. TIA

POST 2Original post

I expect it's the post-cat lambdas complaining(check it is). Remap or fit spacers. Top Gear might have some specific advice.

POST 3Original post

have a word with Alex about the lambda cheats you can fit or get it mapped out . it may just need new lambdas are they are quite sensitive and one small knock getting them off the old exhaust and they break. :thumb: but your right very common :thumb:

POST 4Original post

I get the same issue with the Kline setup I have fitted ....only comes on I& I have been driving slowly in the higher gears and not 'spiritedly' .... maybe the car is trying to tell me something ... Buy a diagnostic tool which allows read and resetting if these 'fault codes' I bought this one , pretty good ... https://www.amazon.com/iCarsoft-POR-II-Porsche-Scanner-Multi-systems/dp/B011DKBXBK

POST 5Original post

I have the top gear 200 cel cat with the connected boxes but don't get any lights in.

POST 7Original post

If you're going to get the light mapped out could you lose your cats for a bit of turbo noise?

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